Tracking P0455 on Your 2022 BMW 5 Series
A P0455 on your 2022 5 Series (G30) signals a large EVAP leak. Whether you have the 530i (2.0T) or 540i (3.0T), the diagnostic approach is the same. Your BMW is likely under warranty.
Evidence
- Check engine light on
- P0455 in DME memory
- Possible fuel smell
- Gas cap issue
Causes by Likelihood
- Gas Cap Seal (Very High Likelihood): Loose or worn. $0–$30.
- EVAP Leak Detection Pump (Medium Likelihood): BMW LDP. $280–$480 installed.
- Purge Valve (Medium Likelihood): Sticking. $200–$380 installed.
- Fuel Tank Vent Valve (Low-Medium Likelihood): BMW vent valve. $220–$400 installed.
- Vapor Hose (Low Likelihood): Connection issue. $100–$260.
Diagnosis
Gas cap first. If P0455 persists, BMW ISTA diagnostics can isolate the fault. The LDP is a common BMW failure point worth checking.
Warranty
Your 2022 5 Series is likely under BMW's 4-year/50,000-mile warranty through 2026. Federal emissions (8yr/80k) covers EVAP through 2030.
Safe to Drive?
Yes. P0455 is vapor only. Engine, transmission, xDrive all unaffected.